How do we know which direction ground water will flow?
A) It is generally the same as the prevailing wind direction.
B) It flows perpendicular to the water table contours, in a downhill direction.
C) It is parallel to local stream flow, just slower.
D) Dye or chemical tracer tests are required, often requiring multiple wells and months.

Question

Quizplus · Accepted Answer

Groundwater flows from areas of higher hydraulic head to areas of lower hydraulic head, which is perpendicular to the water table contours and generally downhill.

How Do We Know Which Direction Ground Water Will Flow